Carpal tunnel syndrome, also known as carpal tunnel stenosis, is a condition caused by trauma to the wrist, fracture, dislocation, sprain or wrist strain, which leads to thickening of the transverse carpal ligament, swelling of the muscle in the canal, degeneration of the tissue due to stasis of blood, or degeneration and proliferation of the carpal bone, which reduces the circumference of the canal lumen, thus compressing the median nerve and causing numbness and weakness of the fingers. This disease is common in people who work in occupational handling, lifting, twisting, pinching, and so on. The main symptoms of the disease are as follows: numbness or tingling in the 3 and a half fingers on the patient’s side, generally the middle finger is the first and most serious, intensifying at night, affecting sleep, increasing pain when the temperature is high, and can be reduced after morning activities or shaking hands; cold season, the affected finger is cold, cyanosis, finger activity is not sensitive, thumb abductor muscle strength is poor; serious condition of the affected side of the size of the interphalangeal muscles atrophy, the skin is bright, nail thickening. The skin is shiny, nail thickening, and even the affected finger ulcers and other symptoms of neurotrophic disorders, inflexible thumb activities affect daily life. ”Mouse hand” With the popularity of computers, more and more people are exposed to and use computers for a long time every day, most of these Internet users keep typing on the keyboard and moving the mouse every day, hand experts believe that often repeated mechanical click on the mouse, will make the right index finger and the associated muscles, nerves, ligaments in a state of non-intermittent fatigue The nerves around the carpal tunnel are damaged or compressed, resulting in nerve conduction being blocked. This causes sensory and motor disorders in the palm of the hand. In addition, the elbow is often lower than the wrist, while the hand is raised high, the nerves and tendons are often compressed, the hand will begin to numb, the fingers lose flexibility, and often joint pain. Frequent exertion of the fingers will also cause damage to the nerves and muscles in the hand and related areas due to overexertion, resulting in a series of symptoms such as ischemia and hypoxia and numbness. And this disease is rapidly becoming an increasingly common disease of modern civilization “mouse hand”, because these nerves, muscles and ligaments in the palm of the hand are to pass through a cavity, that is, carpal tunnel, mouse hand in medicine is also called “carpal tunnel syndrome”.